<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>常见网页布局</title>
    <link rel="stylesheet" href="./css-layout.css">
    <link rel="stylesheet" href="./normalize.css">
</head>
<body>
    <div class="top">top</div>
    <div class="banner">banner</div>
    <div class="box">
        <ul>
            <li>1</li>
            <li>2</li>
            <li>3</li>
            <li class="last">4</li>
        </ul>
    </div>
    <!-- 只要是通栏的盒子（和浏览器一样宽）不需要指定宽 -->
    <div class="footer">footer</div>

</body>
</html>